[ios] Enables the BuiltinProvider.

components/omnibox/browser/autocomplete_classifier.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/omnibox/browser/autocomplete_classifier.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/feature_list.h"
@@ skipping 26 matching lines @@
 int AutocompleteClassifier::DefaultOmniboxProviders() {
   return
 #if defined(OS_ANDROID) || defined(OS_IOS)
       // The Physical Web currently is only implemented on mobile devices.
       AutocompleteProvider::TYPE_PHYSICAL_WEB |
 #else
       // Custom search engines cannot be used on mobile.
       AutocompleteProvider::TYPE_KEYWORD |
 #endif
 #if !defined(OS_IOS)
-      // "Builtin", "Shortcuts" and "Zero Suggest" are not supported on iOS.
-      AutocompleteProvider::TYPE_BUILTIN |
+      // "Shortcuts" and "Zero Suggest" are not supported on iOS.
       AutocompleteProvider::TYPE_SHORTCUTS |
       AutocompleteProvider::TYPE_ZERO_SUGGEST |
 #endif
       (base::FeatureList::IsEnabled(omnibox::kEnableClipboardProvider)
            ? AutocompleteProvider::TYPE_CLIPBOARD_URL
            : 0) |
       AutocompleteProvider::TYPE_BOOKMARK |
+      AutocompleteProvider::TYPE_BUILTIN |
       AutocompleteProvider::TYPE_HISTORY_QUICK |
       AutocompleteProvider::TYPE_HISTORY_URL |
       AutocompleteProvider::TYPE_SEARCH;
 }
 
 void AutocompleteClassifier::Classify(
     const base::string16& text,
     bool prefer_keyword,
     bool allow_exact_keyword_match,
     metrics::OmniboxEventProto::PageClassification page_classification,
@@ skipping 11 matching lines @@
     if (alternate_nav_url)
       *alternate_nav_url = GURL();
     return;
   }
 
   DCHECK(result.default_match() != result.end());
   *match = *result.default_match();
   if (alternate_nav_url)
     *alternate_nav_url = result.alternate_nav_url();
 }